999918240132 has 96 divisors (see below), whose sum is σ = 2684473714944. Its totient is φ = 283764326400.

The previous prime is 999918240091. The next prime is 999918240173. The reversal of 999918240132 is 231042819999.

It is an interprime number because it is at equal distance from previous prime (999918240091) and next prime (999918240173).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10343782 + ... + 10440002.

It is an arithmetic number, because the mean of its divisors is an integer number (27963267864).

Almost surely, 2^999918240132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999918240132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342236857472).

999918240132 is an abundant number, since it is smaller than the sum of its proper divisors (1684555474812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999918240132 is a wasteful number, since it uses less digits than its factorization.

999918240132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97069 (or 97067 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 57.

The spelling of 999918240132 in words is "nine hundred ninety-nine billion, nine hundred eighteen million, two hundred forty thousand, one hundred thirty-two".